Plastic composition fob



,- emu a FLAsuc.

UNITED STATES Ace/wes PATENT OFFICE.

JOHN SMITH, OF ST. LOUIS, IISSOUBI.

PLAS'IiC COMPOSITION FOR BRICKS.

Drawing. Application filed July 17, 1919,

To allwhomz't may concern: Be it known that I, JOHN SMITH, a-citizen of the United States, residing at St.

Louis, in the State of Missouri, have invented certain new and useful Improvements in Plastic Compositions for Bricks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The resent invention relates to plastic composition, and aims to rovide such a composition for the production of bricks or building blocks including in addition to suitable cement, brick dust and coal ashes, in order that the composition will rovide a brick of good quality and strengt and of desired brick color.

The composition comprises suitable ment. coal ashes and hpick dust in abdii t egual guan 1 ms or propor Ionsi although t ey may vary s ight y un er 1 erent conditions, and these ingredients are with a suitable quantity of water to the desired consistency, and the mire is then permitted to set in molds for about seven or Specification of Letters Patent.

Serial no. 311,510. Renewed April 2, 1921.

Patented July 26, 1921.

Serial No.

eight days. The composition will then have hardened, and the bricks or blocks are extremely solid and compact, that is, referring to the granu ar ruc ure iereof. The use of coa as es an 1'10 ust with a suitable cement provide a plastic composition which Wlll be strong and durable, and of brick color. Difi'erenmm can be provided b using brick dust of different colors brie dust servlng as a co or 111 mm as well as assisting in binding e part1c es of the mixture together.

In some cases, san can be used i gtead of coal ashes, when esired.

avmg t us described the invention, what is claimed as new is A plastic com osition comprising cement, coal ashes rick dust of substantially In testimony whereof I have signed my name to this s ification in the presence of two subscribing witnesses.

JOHN SMITH Witnesses:

F. H. SPEARS, A. F. Woomno. 

